几个语法题1I don't mind picking up your things from the store.the

几个语法题
1I don't mind picking up your things from the store.the walk will do me good
a sooner or later b still c in time d besides我知道答案是d 但可以选still吗
求其用法
2Could you please tell me where you bought the shoes you yesterday
a tried on b put on c had on d pulled on 用排除法判断是c但是 好像没看过这用法,
3There is a great deal of evidence that music acticities engage different parts of the brain a indicate b indicating c to indicate dto be indicating
答案是b是现在分词作定语 但是为什么不可以选c
twice the postman refused to deliver our letters unless we chained our dog
a being bitten b bitten c having bitten d to be bitten
我知道是选b但是 a似乎也可以 being 加过去分词 可以表原因 而句子不是也可以表因果关系吗
I'm sorry you've been waiting so long ,but it'll still be some time brian get back
a before b since c till d after
a 但c不可以吗
there were some chairs left over everyon had sat down
a when b until c that d where
We have to the wheat as soon as possible because a storm is on the way
a get away b get across c get through d get in